279489120 has 96 divisors (see below), whose sum is σ = 904242528. Its totient is φ = 72511488.

The previous prime is 279489113. The next prime is 279489127. The reversal of 279489120 is 21984972.

It is an interprime number because it is at equal distance from previous prime (279489113) and next prime (279489127).

It is a tau number, because it is divible by the number of its divisors (96).

It is a super-2 number, since 2×279489120² = 156228336396748800, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (279489127) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9892 + ... + 25628.

It is an arithmetic number, because the mean of its divisors is an integer number (9419193).

Almost surely, 2^279489120 is an apocalyptic number.

279489120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 279489120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (452121264).

279489120 is an abundant number, since it is smaller than the sum of its proper divisors (624753408).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

279489120 is a wasteful number, since it uses less digits than its factorization.

279489120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15792 (or 15784 counting only the distinct ones).

The product of its (nonzero) digits is 72576, while the sum is 42.

The square root of 279489120 is about 16717.9281012929. The cubic root of 279489120 is about 653.8151335261.

The spelling of 279489120 in words is "two hundred seventy-nine million, four hundred eighty-nine thousand, one hundred twenty".